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Finding the Fourth Proportional to 483.63, 721.89 and 479.58

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Solution

The fourth proportional to 483.63, 721.89 and 479.58 is: 715.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.63 : 721.89 = 479.58 : x
  2. Step 2: Convert to fraction form
    483.63/721.89 = 479.58/x
  3. Step 3: Cross multiply
    483.63x = 721.89 × 479.58
  4. Step 4: Simplify right side
    483.63x = 346,204.01
  5. Step 5: Solve for x
    x = 346,204.01/483.63
  6. Step 6: Final answer
    x = 715.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.